61477050720 has 48 divisors (see below), whose sum is σ = 193652711280. Its totient is φ = 16393880064.

The previous prime is 61477050689. The next prime is 61477050721. The reversal of 61477050720 is 2705077416.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61477050721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64038115 + ... + 64039074.

It is an arithmetic number, because the mean of its divisors is an integer number (4034431485).

Almost surely, 2^61477050720 is an apocalyptic number.

61477050720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61477050720 is an abundant number, since it is smaller than the sum of its proper divisors (132175660560).

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

61477050720 is a wasteful number, since it uses less digits than its factorization.

61477050720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128077207 (or 128077199 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 39.

The spelling of 61477050720 in words is "sixty-one billion, four hundred seventy-seven million, fifty thousand, seven hundred twenty".