15527679400640 has 224 divisors, whose sum is σ = 44566357261824. Its totient is φ = 5083229634560.

The previous prime is 15527679400627. The next prime is 15527679400679. The reversal of 15527679400640 is 4600497672551.

It is a happy number.

It is a super-2 number, since 2×15527679400640² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4264694 + ... + 7017333.

Almost surely, 2^{15527679400640} is an apocalyptic number.

15527679400640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15527679400640 is an abundant number, since it is smaller than the sum of its proper divisors (29038677861184).

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

15527679400640 is a wasteful number, since it uses less digits than its factorization.

15527679400640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11282095 (or 11282085 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 56.

The spelling of 15527679400640 in words is "fifteen trillion, five hundred twenty-seven billion, six hundred seventy-nine million, four hundred thousand, six hundred forty".