61047571420 has 48 divisors (see below), whose sum is σ = 139872122208. Its totient is φ = 22196309760.

The previous prime is 61047571411. The next prime is 61047571433. The reversal of 61047571420 is 2417574016.

61047571420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 61047571420.

It is a congruent number.

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, 2636614 + ... + 2659666.

It is an arithmetic number, because the mean of its divisors is an integer number (2914002546).

Almost surely, 2^61047571420 is an apocalyptic number.

It is an amenable number.

61047571420 is an abundant number, since it is smaller than the sum of its proper divisors (78824550788).

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

61047571420 is a wasteful number, since it uses less digits than its factorization.

61047571420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35110 (or 35108 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The spelling of 61047571420 in words is "sixty-one billion, forty-seven million, five hundred seventy-one thousand, four hundred twenty".