61346533720 has 32 divisors (see below), whose sum is σ = 141396282720. Its totient is φ = 23940110080.

The previous prime is 61346533711. The next prime is 61346533739. The reversal of 61346533720 is 2733564316.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18701572 + ... + 18704851.

It is an arithmetic number, because the mean of its divisors is an integer number (4418633835).

Almost surely, 2^61346533720 is an apocalyptic number.

It is an amenable number.

61346533720 is an abundant number, since it is smaller than the sum of its proper divisors (80049749000).

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

61346533720 is a wasteful number, since it uses less digits than its factorization.

61346533720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37406475 (or 37406471 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 40.

The spelling of 61346533720 in words is "sixty-one billion, three hundred forty-six million, five hundred thirty-three thousand, seven hundred twenty".