70724513953 has 4 divisors (see below), whose sum is σ = 70727859220. Its totient is φ = 70721168688.

The previous prime is 70724513933. The next prime is 70724513983. The reversal of 70724513953 is 35931542707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35931542707 = 1039 ⋅34582813.

It can be written as a sum of positive squares in 2 ways, for example, as 37437606144 + 33286907809 = 193488^2 + 182447^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70724513953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70724513933) 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, 1640718 + ... + 1683271.

It is an arithmetic number, because the mean of its divisors is an integer number (17681964805).

Almost surely, 2^70724513953 is an apocalyptic number.

It is an amenable number.

70724513953 is a deficient number, since it is larger than the sum of its proper divisors (3345267).

70724513953 is a wasteful number, since it uses less digits than its factorization.

70724513953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3345266.

The product of its (nonzero) digits is 793800, while the sum is 46.

The spelling of 70724513953 in words is "seventy billion, seven hundred twenty-four million, five hundred thirteen thousand, nine hundred fifty-three".