70400468639 has 4 divisors (see below), whose sum is σ = 70422087024. Its totient is φ = 70378850256.

The previous prime is 70400468603. The next prime is 70400468669. The reversal of 70400468639 is 93686400407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93686400407 = 104761 ⋅894287.

It is a cyclic number.

It is not a de Polignac number, because 70400468639 - 2²⁴ = 70383691423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70400468593 and 70400468602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70400468669) 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, 10804307 + ... + 10810820.

It is an arithmetic number, because the mean of its divisors is an integer number (17605521756).

Almost surely, 2^70400468639 is an apocalyptic number.

70400468639 is a deficient number, since it is larger than the sum of its proper divisors (21618385).

70400468639 is a wasteful number, since it uses less digits than its factorization.

70400468639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21618384.

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 70400468639 in words is "seventy billion, four hundred million, four hundred sixty-eight thousand, six hundred thirty-nine".