61479578754 has 48 divisors (see below), whose sum is σ = 145525989024. Its totient is φ = 18603172800.

The previous prime is 61479578747. The next prime is 61479578759. The reversal of 61479578754 is 45787597416.

61479578754 is a `hidden beast` number, since 6 + 1 + 4 + 7 + 9 + 578 + 7 + 54 = 666.

61479578754 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61479578691 and 61479578700.

It is not an unprimeable number, because it can be changed into a prime (61479578759) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87859 + ... + 361494.

It is an arithmetic number, because the mean of its divisors is an integer number (3031791438).

Almost surely, 2^61479578754 is an apocalyptic number.

61479578754 is an abundant number, since it is smaller than the sum of its proper divisors (84046410270).

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

61479578754 is a wasteful number, since it uses less digits than its factorization.

61479578754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450063 (or 450060 counting only the distinct ones).

The product of its digits is 59270400, while the sum is 63.

The spelling of 61479578754 in words is "sixty-one billion, four hundred seventy-nine million, five hundred seventy-eight thousand, seven hundred fifty-four".