642046676451 has 16 divisors (see below), whose sum is σ = 876034346880. Its totient is φ = 418046509440.

The previous prime is 642046676431. The next prime is 642046676471. The reversal of 642046676451 is 154676640246.

It is an interprime number because it is at equal distance from previous prime (642046676431) and next prime (642046676471).

It is not a de Polignac number, because 642046676451 - 2⁵ = 642046676419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 642046676394 and 642046676403.

It is not an unprimeable number, because it can be changed into a prime (642046676431) 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, 1673640 + ... + 2021178.

It is an arithmetic number, because the mean of its divisors is an integer number (54752146680).

Almost surely, 2^642046676451 is an apocalyptic number.

642046676451 is a deficient number, since it is larger than the sum of its proper divisors (233987670429).

642046676451 is a wasteful number, since it uses less digits than its factorization.

642046676451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361906.

The product of its (nonzero) digits is 5806080, while the sum is 51.

The spelling of 642046676451 in words is "six hundred forty-two billion, forty-six million, six hundred seventy-six thousand, four hundred fifty-one".