642370155642454 has 16 divisors (see below), whose sum is σ = 982419882444000. Its totient is φ = 314957617208064.

The previous prime is 642370155642431. The next prime is 642370155642463. The reversal of 642370155642454 is 454246551073246.

It is a super-2 number, since 2×642370155642454² (a number of 30 digits) contains 22 as substring.

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, 15188907154 + ... + 15188949445.

It is an arithmetic number, because the mean of its divisors is an integer number (61401242652750).

Almost surely, 2^{642370155642454} is an apocalyptic number.

642370155642454 is a deficient number, since it is larger than the sum of its proper divisors (340049726801546).

642370155642454 is a wasteful number, since it uses less digits than its factorization.

642370155642454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30377856807.

The product of its (nonzero) digits is 96768000, while the sum is 58.

The spelling of 642370155642454 in words is "six hundred forty-two trillion, three hundred seventy billion, one hundred fifty-five million, six hundred forty-two thousand, four hundred fifty-four".