21507527006130 has 64 divisors (see below), whose sum is σ = 56312219972736. Its totient is φ = 5213797440000.

The previous prime is 21507527006129. The next prime is 21507527006143. The reversal of 21507527006130 is 3160072570512.

It is a happy number.

It is a super-2 number, since 2×21507527006130² (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, 10904100 + ... + 12724560.

It is an arithmetic number, because the mean of its divisors is an integer number (879878437074).

Almost surely, 2^{21507527006130} is an apocalyptic number.

21507527006130 is an abundant number, since it is smaller than the sum of its proper divisors (34804692966606).

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

21507527006130 is a wasteful number, since it uses less digits than its factorization.

21507527006130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856283.

The product of its (nonzero) digits is 88200, while the sum is 39.

Adding to 21507527006130 its reverse (3160072570512), we get a palindrome (24667599576642).

The spelling of 21507527006130 in words is "twenty-one trillion, five hundred seven billion, five hundred twenty-seven million, six thousand, one hundred thirty".