70920105983 has 4 divisors (see below), whose sum is σ = 74652743160. Its totient is φ = 67187468808.

The previous prime is 70920105889. The next prime is 70920105989. The reversal of 70920105983 is 38950102907.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38950102907 = 271 ⋅143727317.

It is a cyclic number.

It is not a de Polignac number, because 70920105983 - 2¹⁶ = 70920040447 is a prime.

It is a super-2 number, since 2×70920105983² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70920105989) 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, 1866318560 + ... + 1866318597.

It is an arithmetic number, because the mean of its divisors is an integer number (18663185790).

Almost surely, 2^70920105983 is an apocalyptic number.

70920105983 is a deficient number, since it is larger than the sum of its proper divisors (3732637177).

70920105983 is a wasteful number, since it uses less digits than its factorization.

70920105983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3732637176.

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 70920105983 in words is "seventy billion, nine hundred twenty million, one hundred five thousand, nine hundred eighty-three".