61189235456 has 36 divisors (see below), whose sum is σ = 122155547472. Its totient is φ = 30590585856.

The previous prime is 61189235449. The next prime is 61189235479. The reversal of 61189235456 is 65453298116.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3252830 + ... + 3271586.

It is an arithmetic number, because the mean of its divisors is an integer number (3393209652).

Almost surely, 2^61189235456 is an apocalyptic number.

It is an amenable number.

61189235456 is a deficient number, since it is larger than the sum of its proper divisors (60966312016).

61189235456 is a wasteful number, since it uses less digits than its factorization.

61189235456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31516 (or 31502 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 50.

The spelling of 61189235456 in words is "sixty-one billion, one hundred eighty-nine million, two hundred thirty-five thousand, four hundred fifty-six".