61889277480 has 64 divisors (see below), whose sum is σ = 185684184000. Its totient is φ = 16502353920.

The previous prime is 61889277469. The next prime is 61889277481. The reversal of 61889277480 is 8477298816.

61889277480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (61889277481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2712520 + ... + 2735240.

It is an arithmetic number, because the mean of its divisors is an integer number (2901315375).

Almost surely, 2^61889277480 is an apocalyptic number.

61889277480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61889277480 is an abundant number, since it is smaller than the sum of its proper divisors (123794906520).

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

61889277480 is a wasteful number, since it uses less digits than its factorization.

61889277480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45434 (or 45430 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 60.

The spelling of 61889277480 in words is "sixty-one billion, eight hundred eighty-nine million, two hundred seventy-seven thousand, four hundred eighty".