70661789442 has 24 divisors (see below), whose sum is σ = 153164722620. Its totient is φ = 23544056160.

The previous prime is 70661789437. The next prime is 70661789489. The reversal of 70661789442 is 24498716607.

70661789442 is a `hidden beast` number, since 70 + 6 + 61 + 78 + 9 + 442 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 70565140881 + 96648561 = 265641^2 + 9831^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 778609 + ... + 864612.

Almost surely, 2^70661789442 is an apocalyptic number.

70661789442 is an abundant number, since it is smaller than the sum of its proper divisors (82502933178).

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

70661789442 is a wasteful number, since it uses less digits than its factorization.

70661789442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645618 (or 1645615 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 70661789442 in words is "seventy billion, six hundred sixty-one million, seven hundred eighty-nine thousand, four hundred forty-two".