102914781907391 has 16 divisors (see below), whose sum is σ = 103293295974048. Its totient is φ = 102536694374400.

The previous prime is 102914781907373. The next prime is 102914781907411. The reversal of 102914781907391 is 193709187419201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102914781907391 is a prime.

It is a super-2 number, since 2×102914781907391² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102914781907291) 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, 5186965631 + ... + 5186985471.

It is an arithmetic number, because the mean of its divisors is an integer number (6455830998378).

Almost surely, 2^{102914781907391} is an apocalyptic number.

102914781907391 is a deficient number, since it is larger than the sum of its proper divisors (378514066657).

102914781907391 is a wasteful number, since it uses less digits than its factorization.

102914781907391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29642.

The product of its (nonzero) digits is 6858432, while the sum is 62.

The spelling of 102914781907391 in words is "one hundred two trillion, nine hundred fourteen billion, seven hundred eighty-one million, nine hundred seven thousand, three hundred ninety-one".