Search a number
-
+
88155093681 = 3272167135727
BaseRepresentation
bin101001000011001110…
…0111111101010110001
322102112200100202102200
41102012130333222301
52421020200444211
6104255313333413
76240364634634
oct1220634775261
9272480322380
1088155093681
1134428285726
1215102b67269
13840b83b435
1443a3c95c1b
15245e402b56
hex148673fab1

88155093681 has 12 divisors (see below), whose sum is σ = 127337837952. Its totient is φ = 58768815096.

The previous prime is 88155093671. The next prime is 88155093709. The reversal of 88155093681 is 18639055188.

88155093681 is a `hidden beast` number, since 8 + 8 + 1 + 550 + 9 + 3 + 6 + 81 = 666.

It is not a de Polignac number, because 88155093681 - 218 = 88154831537 is a prime.

It is a super-2 number, since 2×881550936812 (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (88155093641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 581640 + ... + 717366.

It is an arithmetic number, because the mean of its divisors is an integer number (10611486496).

Almost surely, 288155093681 is an apocalyptic number.

It is an amenable number.

88155093681 is a deficient number, since it is larger than the sum of its proper divisors (39182744271).

88155093681 is a wasteful number, since it uses less digits than its factorization.

88155093681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207900 (or 207897 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 54.

The spelling of 88155093681 in words is "eighty-eight billion, one hundred fifty-five million, ninety-three thousand, six hundred eighty-one".

Divisors: 1 3 9 72167 135727 216501 407181 649503 1221543 9795010409 29385031227 88155093681