57621281206 has 4 divisors (see below), whose sum is σ = 86431921812. Its totient is φ = 28810640602.

The previous prime is 57621281197. The next prime is 57621281213. The reversal of 57621281206 is 60218212675.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14405320300 + ... + 14405320303.

It is an arithmetic number, because the mean of its divisors is an integer number (21607980453).

Almost surely, 2^57621281206 is an apocalyptic number.

57621281206 is a deficient number, since it is larger than the sum of its proper divisors (28810640606).

57621281206 is a wasteful number, since it uses less digits than its factorization.

57621281206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28810640605.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 57621281206 in words is "fifty-seven billion, six hundred twenty-one million, two hundred eighty-one thousand, two hundred six".