101925309491 has 8 divisors (see below), whose sum is σ = 105099618960. Its totient is φ = 98797340512.

The previous prime is 101925309443. The next prime is 101925309509. The reversal of 101925309491 is 194903529101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101925309491 is a prime.

It is a super-2 number, since 2×101925309491² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101925302491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11580656 + ... + 11589453.

It is an arithmetic number, because the mean of its divisors is an integer number (13137452370).

Almost surely, 2^101925309491 is an apocalyptic number.

101925309491 is a deficient number, since it is larger than the sum of its proper divisors (3174309469).

101925309491 is an equidigital number, since it uses as much as digits as its factorization.

101925309491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23170245.

The product of its (nonzero) digits is 87480, while the sum is 44.

The spelling of 101925309491 in words is "one hundred one billion, nine hundred twenty-five million, three hundred nine thousand, four hundred ninety-one".