42620444664 has 32 divisors (see below), whose sum is σ = 121772699520. Its totient is φ = 12177269856.

The previous prime is 42620444641. The next prime is 42620444687. The reversal of 42620444664 is 46644402624.

It is an interprime number because it is at equal distance from previous prime (42620444641) and next prime (42620444687).

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 126846394 + ... + 126846729.

It is an arithmetic number, because the mean of its divisors is an integer number (3805396860).

Almost surely, 2^42620444664 is an apocalyptic number.

It is an amenable number.

42620444664 is an abundant number, since it is smaller than the sum of its proper divisors (79152254856).

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

42620444664 is a wasteful number, since it uses less digits than its factorization.

42620444664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253693139 (or 253693135 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 42.

The spelling of 42620444664 in words is "forty-two billion, six hundred twenty million, four hundred forty-four thousand, six hundred sixty-four".