61630522521000 has 64 divisors (see below), whose sum is σ = 192287230274880. Its totient is φ = 16434806004800.

The previous prime is 61630522520993. The next prime is 61630522521037. The reversal of 61630522521000 is 12522503616.

It is a super-2 number, since 2×61630522521000² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10271750754 + ... + 10271756753.

It is an arithmetic number, because the mean of its divisors is an integer number (3004487973045).

Almost surely, 2^{61630522521000} is an apocalyptic number.

61630522521000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61630522521000 is an abundant number, since it is smaller than the sum of its proper divisors (130656707753880).

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

61630522521000 is a wasteful number, since it uses less digits than its factorization.

61630522521000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20543507531 (or 20543507517 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 61630522521000 in words is "sixty-one trillion, six hundred thirty billion, five hundred twenty-two million, five hundred twenty-one thousand".