61490528460 has 48 divisors (see below), whose sum is σ = 191303868000. Its totient is φ = 16397474112.

The previous prime is 61490528447. The next prime is 61490528471. The reversal of 61490528460 is 6482509416.

61490528460 is a `hidden beast` number, since 61 + 4 + 9 + 0 + 528 + 4 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 56935135 + ... + 56936214.

It is an arithmetic number, because the mean of its divisors is an integer number (3985497250).

Almost surely, 2^61490528460 is an apocalyptic number.

61490528460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61490528460 is an abundant number, since it is smaller than the sum of its proper divisors (129813339540).

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

61490528460 is a wasteful number, since it uses less digits than its factorization.

61490528460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113871367 (or 113871359 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 61490528460 in words is "sixty-one billion, four hundred ninety million, five hundred twenty-eight thousand, four hundred sixty".