642370155644074 has 32 divisors (see below), whose sum is σ = 1132014447285120. Its totient is φ = 269524629508800.

The previous prime is 642370155644071. The next prime is 642370155644201. The reversal of 642370155644074 is 470446551073246.

It is not an unprimeable number, because it can be changed into a prime (642370155644071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54646539 + ... + 65352769.

It is an arithmetic number, because the mean of its divisors is an integer number (35375451477660).

Almost surely, 2^{642370155644074} is an apocalyptic number.

642370155644074 is a deficient number, since it is larger than the sum of its proper divisors (489644291641046).

642370155644074 is a wasteful number, since it uses less digits than its factorization.

642370155644074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10916046.

The product of its (nonzero) digits is 67737600, while the sum is 58.

The spelling of 642370155644074 in words is "six hundred forty-two trillion, three hundred seventy billion, one hundred fifty-five million, six hundred forty-four thousand, seventy-four".