102757481921 has 8 divisors (see below), whose sum is σ = 103394418624. Its totient is φ = 102120802960.

The previous prime is 102757481891. The next prime is 102757481923. The reversal of 102757481921 is 129184757201.

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

It is a cyclic number.

It is not a de Polignac number, because 102757481921 - 2⁶ = 102757481857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102757481923) 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, 768626 + ... + 892356.

It is an arithmetic number, because the mean of its divisors is an integer number (12924302328).

Almost surely, 2^102757481921 is an apocalyptic number.

It is an amenable number.

102757481921 is a deficient number, since it is larger than the sum of its proper divisors (636936703).

102757481921 is a wasteful number, since it uses less digits than its factorization.

102757481921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128871.

The product of its (nonzero) digits is 282240, while the sum is 47.

The spelling of 102757481921 in words is "one hundred two billion, seven hundred fifty-seven million, four hundred eighty-one thousand, nine hundred twenty-one".