61421879228 has 54 divisors (see below), whose sum is σ = 111203770104. Its totient is φ = 29683401552.

The previous prime is 61421879179. The next prime is 61421879237. The reversal of 61421879228 is 82297812416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 275434325 + ... + 275434547.

It is an arithmetic number, because the mean of its divisors is an integer number (2059329076).

Almost surely, 2^61421879228 is an apocalyptic number.

It is an amenable number.

61421879228 is a deficient number, since it is larger than the sum of its proper divisors (49781890876).

61421879228 is a wasteful number, since it uses less digits than its factorization.

61421879228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703 (or 435 counting only the distinct ones).

The product of its digits is 774144, while the sum is 50.

The spelling of 61421879228 in words is "sixty-one billion, four hundred twenty-one million, eight hundred seventy-nine thousand, two hundred twenty-eight".