61521462588 has 24 divisors (see below), whose sum is σ = 151994202192. Its totient is φ = 19300850944.

The previous prime is 61521462551. The next prime is 61521462601. The reversal of 61521462588 is 88526412516.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150787695 + ... + 150788102.

It is an arithmetic number, because the mean of its divisors is an integer number (6333091758).

Almost surely, 2^61521462588 is an apocalyptic number.

61521462588 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

61521462588 is an abundant number, since it is smaller than the sum of its proper divisors (90472739604).

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

61521462588 is a wasteful number, since it uses less digits than its factorization.

61521462588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301575821 (or 301575819 counting only the distinct ones).

The product of its digits is 921600, while the sum is 48.

The spelling of 61521462588 in words is "sixty-one billion, five hundred twenty-one million, four hundred sixty-two thousand, five hundred eighty-eight".