101387295261 has 12 divisors (see below), whose sum is σ = 167369503392. Its totient is φ = 57935597256.

The previous prime is 101387295257. The next prime is 101387295283. The reversal of 101387295261 is 162592783101.

101387295261 is a `hidden beast` number, since 1 + 0 + 1 + 387 + 2 + 9 + 5 + 261 = 666.

It is not a de Polignac number, because 101387295261 - 2² = 101387295257 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101387295461) 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, 804661011 + ... + 804661136.

It is an arithmetic number, because the mean of its divisors is an integer number (13947458616).

Almost surely, 2^101387295261 is an apocalyptic number.

It is an amenable number.

101387295261 is a deficient number, since it is larger than the sum of its proper divisors (65982208131).

101387295261 is a wasteful number, since it uses less digits than its factorization.

101387295261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609322160 (or 1609322157 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 101387295261 in words is "one hundred one billion, three hundred eighty-seven million, two hundred ninety-five thousand, two hundred sixty-one".