102157999999 has 16 divisors (see below), whose sum is σ = 114518891520. Its totient is φ = 90312118560.

The previous prime is 102157999973. The next prime is 102158000059. The reversal of 102157999999 is 999999751201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 102157999999 - 2⁷ = 102157999871 is a prime.

102157999999 is a modest number, since divided by 999999 gives 102157 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102157999939) 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, 697962 + ... + 831544.

It is an arithmetic number, because the mean of its divisors is an integer number (7157430720).

Almost surely, 2^102157999999 is an apocalyptic number.

102157999999 is a deficient number, since it is larger than the sum of its proper divisors (12360891521).

102157999999 is a wasteful number, since it uses less digits than its factorization.

102157999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135510.

The product of its (nonzero) digits is 37200870, while the sum is 70.

The spelling of 102157999999 in words is "one hundred two billion, one hundred fifty-seven million, nine hundred ninety-nine thousand, nine hundred ninety-nine".