103902136638 has 8 divisors (see below), whose sum is σ = 207804273288. Its totient is φ = 34634045544.

The previous prime is 103902136621. The next prime is 103902136739. The reversal of 103902136638 is 836631209301.

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

103902136638 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 103902136638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8658511381 + ... + 8658511392.

It is an arithmetic number, because the mean of its divisors is an integer number (25975534161).

Almost surely, 2^103902136638 is an apocalyptic number.

103902136638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

103902136638 is a wasteful number, since it uses less digits than its factorization.

103902136638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17317022778.

The product of its (nonzero) digits is 139968, while the sum is 42.

The spelling of 103902136638 in words is "one hundred three billion, nine hundred two million, one hundred thirty-six thousand, six hundred thirty-eight".