103556434640 has 40 divisors (see below), whose sum is σ = 251236919808. Its totient is φ = 39621591680.

The previous prime is 103556434633. The next prime is 103556434651. The reversal of 103556434640 is 46434655301.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×103556434640³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28138496 + ... + 28142175.

Almost surely, 2^103556434640 is an apocalyptic number.

103556434640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103556434640 is an abundant number, since it is smaller than the sum of its proper divisors (147680485168).

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

103556434640 is a wasteful number, since it uses less digits than its factorization.

103556434640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56280707 (or 56280701 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 103556434640 in words is "one hundred three billion, five hundred fifty-six million, four hundred thirty-four thousand, six hundred forty".