70721043400 has 96 divisors (see below), whose sum is σ = 191751120000. Its totient is φ = 24247191360.

The previous prime is 70721043359. The next prime is 70721043467. The reversal of 70721043400 is 434012707.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 446860 + ... + 584059.

It is an arithmetic number, because the mean of its divisors is an integer number (1997407500).

Almost surely, 2^70721043400 is an apocalyptic number.

70721043400 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

70721043400 is an abundant number, since it is smaller than the sum of its proper divisors (121030076600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70721043400 is a wasteful number, since it uses less digits than its factorization.

70721043400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030956 (or 1030933 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The spelling of 70721043400 in words is "seventy billion, seven hundred twenty-one million, forty-three thousand, four hundred".