20042640070 has 16 divisors (see below), whose sum is σ = 36668175408. Its totient is φ = 7885628640.

The previous prime is 20042640061. The next prime is 20042640071. The reversal of 20042640070 is 7004624002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042640071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16427784 + ... + 16429003.

It is an arithmetic number, because the mean of its divisors is an integer number (2291760963).

Almost surely, 2^20042640070 is an apocalyptic number.

20042640070 is a deficient number, since it is larger than the sum of its proper divisors (16625535338).

20042640070 is a wasteful number, since it uses less digits than its factorization.

20042640070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32856855.

The product of its (nonzero) digits is 2688, while the sum is 25.

The spelling of 20042640070 in words is "twenty billion, forty-two million, six hundred forty thousand, seventy".