61615573416 has 96 divisors (see below), whose sum is σ = 175371699360. Its totient is φ = 19518662016.

The previous prime is 61615573351. The next prime is 61615573451. The reversal of 61615573416 is 61437551616.

61615573416 is a `hidden beast` number, since 6 + 1 + 61 + 5 + 573 + 4 + 16 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154390 + ... + 383493.

It is an arithmetic number, because the mean of its divisors is an integer number (1826788535).

Almost surely, 2^61615573416 is an apocalyptic number.

It is an amenable number.

61615573416 is an abundant number, since it is smaller than the sum of its proper divisors (113756125944).

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

61615573416 is a wasteful number, since it uses less digits than its factorization.

61615573416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537975 (or 537968 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The spelling of 61615573416 in words is "sixty-one billion, six hundred fifteen million, five hundred seventy-three thousand, four hundred sixteen".