70408777646 has 16 divisors (see below), whose sum is σ = 110217513888. Its totient is φ = 33669952800.

The previous prime is 70408777627. The next prime is 70408777657. The reversal of 70408777646 is 64677780407.

It is a junction number, because it is equal to n+sod(n) for n = 70408777591 and 70408777600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347756 + ... + 511616.

It is an arithmetic number, because the mean of its divisors is an integer number (6888594618).

Almost surely, 2^70408777646 is an apocalyptic number.

70408777646 is a deficient number, since it is larger than the sum of its proper divisors (39808736242).

70408777646 is a wasteful number, since it uses less digits than its factorization.

70408777646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173227.

The product of its (nonzero) digits is 11063808, while the sum is 56.

The spelling of 70408777646 in words is "seventy billion, four hundred eight million, seven hundred seventy-seven thousand, six hundred forty-six".