70022021057 has 4 divisors (see below), whose sum is σ = 70031262720. Its totient is φ = 70012779396.

The previous prime is 70022021053. The next prime is 70022021071. The reversal of 70022021057 is 75012022007.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75012022007 = 13 ⋅5770155539.

It is a cyclic number.

It is not a de Polignac number, because 70022021057 - 2² = 70022021053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70022021053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4609457 + ... + 4624622.

It is an arithmetic number, because the mean of its divisors is an integer number (17507815680).

Almost surely, 2^70022021057 is an apocalyptic number.

It is an amenable number.

70022021057 is a deficient number, since it is larger than the sum of its proper divisors (9241663).

70022021057 is an equidigital number, since it uses as much as digits as its factorization.

70022021057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9241662.

The product of its (nonzero) digits is 1960, while the sum is 26.

The spelling of 70022021057 in words is "seventy billion, twenty-two million, twenty-one thousand, fifty-seven".