61501872532 has 48 divisors (see below), whose sum is σ = 112888677888. Its totient is φ = 29280936960.

The previous prime is 61501872473. The next prime is 61501872569. The reversal of 61501872532 is 23527810516.

It is a congruent number.

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, 8113128 + ... + 8120704.

It is an arithmetic number, because the mean of its divisors is an integer number (2351847456).

Almost surely, 2^61501872532 is an apocalyptic number.

61501872532 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

61501872532 is a deficient number, since it is larger than the sum of its proper divisors (51386805356).

61501872532 is a wasteful number, since it uses less digits than its factorization.

61501872532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8656 (or 8654 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 61501872532 in words is "sixty-one billion, five hundred one million, eight hundred seventy-two thousand, five hundred thirty-two".