70400804781 has 4 divisors (see below), whose sum is σ = 93867739712. Its totient is φ = 46933869852.

The previous prime is 70400804767. The next prime is 70400804783. The reversal of 70400804781 is 18740800407.

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.

It is not a de Polignac number, because 70400804781 - 2¹⁷ = 70400673709 is a prime.

It is a super-2 number, since 2×70400804781² (a number of 22 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 (70400804783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11733467461 + ... + 11733467466.

It is an arithmetic number, because the mean of its divisors is an integer number (23466934928).

Almost surely, 2^70400804781 is an apocalyptic number.

It is an amenable number.

70400804781 is a deficient number, since it is larger than the sum of its proper divisors (23466934931).

70400804781 is a wasteful number, since it uses less digits than its factorization.

70400804781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23466934930.

The product of its (nonzero) digits is 50176, while the sum is 39.

The spelling of 70400804781 in words is "seventy billion, four hundred million, eight hundred four thousand, seven hundred eighty-one".