70120550251 has 4 divisors (see below), whose sum is σ = 70136071600. Its totient is φ = 70105028904.

The previous prime is 70120550231. The next prime is 70120550293. The reversal of 70120550251 is 15205502107.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15205502107 = 163 ⋅93285289.

It is a cyclic number.

It is not a de Polignac number, because 70120550251 - 2⁵ = 70120550219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70120550231) 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, 7753896 + ... + 7762933.

It is an arithmetic number, because the mean of its divisors is an integer number (17534017900).

Almost surely, 2^70120550251 is an apocalyptic number.

70120550251 is a deficient number, since it is larger than the sum of its proper divisors (15521349).

70120550251 is a wasteful number, since it uses less digits than its factorization.

70120550251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15521348.

The product of its (nonzero) digits is 3500, while the sum is 28.

The spelling of 70120550251 in words is "seventy billion, one hundred twenty million, five hundred fifty thousand, two hundred fifty-one".