642370155642453 has 16 divisors (see below), whose sum is σ = 978858429511680. Its totient is φ = 367065409667376.

The previous prime is 642370155642431. The next prime is 642370155642463. The reversal of 642370155642453 is 354246551073246.

It is not a de Polignac number, because 642370155642453 - 2⁵ = 642370155642421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 642370155642393 and 642370155642402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642370155642463) 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, 133017033 + ... + 137761646.

It is an arithmetic number, because the mean of its divisors is an integer number (61178651844480).

Almost surely, 2^{642370155642453} is an apocalyptic number.

It is an amenable number.

642370155642453 is a deficient number, since it is larger than the sum of its proper divisors (336488273869227).

642370155642453 is a wasteful number, since it uses less digits than its factorization.

642370155642453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270891656.

The product of its (nonzero) digits is 72576000, while the sum is 57.

The spelling of 642370155642453 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-three".