102797998065 has 48 divisors (see below), whose sum is σ = 203832720000. Its totient is φ = 46948421376.

The previous prime is 102797998049. The next prime is 102797998067. The reversal of 102797998065 is 560899797201.

It is not a de Polignac number, because 102797998065 - 2⁴ = 102797998049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 102797997993 and 102797998011.

It is not an unprimeable number, because it can be changed into a prime (102797998067) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 174886 + ... + 485984.

It is an arithmetic number, because the mean of its divisors is an integer number (4246515000).

Almost surely, 2^102797998065 is an apocalyptic number.

102797998065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102797998065 is a deficient number, since it is larger than the sum of its proper divisors (101034721935).

102797998065 is a wasteful number, since it uses less digits than its factorization.

102797998065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312166 (or 312163 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 63.

The spelling of 102797998065 in words is "one hundred two billion, seven hundred ninety-seven million, nine hundred ninety-eight thousand, sixty-five".