Search a number
-
+
21377875047 = 322733793151
BaseRepresentation
bin10011111010001110…
…000111110001100111
32001011212020120110220
4103322032013301213
5322240214000142
613453150015423
71354522640214
oct237216076147
961155216426
1021377875047
119080286a31
1241874a7573
132028caaa09
14106b2b8b0b
15851be02ec
hex4fa387c67

21377875047 has 16 divisors (see below), whose sum is σ = 28714662912. Its totient is φ = 14146876800.

The previous prime is 21377875039. The next prime is 21377875087. The reversal of 21377875047 is 74057877312.

It is not a de Polignac number, because 21377875047 - 23 = 21377875039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21377875087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182922 + ... + 276072.

It is an arithmetic number, because the mean of its divisors is an integer number (1794666432).

Almost surely, 221377875047 is an apocalyptic number.

21377875047 is a deficient number, since it is larger than the sum of its proper divisors (7336787865).

21377875047 is a wasteful number, since it uses less digits than its factorization.

21377875047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93718.

The product of its (nonzero) digits is 2304960, while the sum is 51.

The spelling of 21377875047 in words is "twenty-one billion, three hundred seventy-seven million, eight hundred seventy-five thousand, forty-seven".

Divisors: 1 3 227 337 681 1011 76499 93151 229497 279453 21145277 31391887 63435831 94175661 7125958349 21377875047