642069700751 has 8 divisors (see below), whose sum is σ = 642885625200. Its totient is φ = 641254294080.

The previous prime is 642069700633. The next prime is 642069700757. The reversal of 642069700751 is 157007960246.

642069700751 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 642069700751 - 2²² = 642065506447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 642069700696 and 642069700705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642069700757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2383085 + ... + 2638793.

It is an arithmetic number, because the mean of its divisors is an integer number (80360703150).

Almost surely, 2^642069700751 is an apocalyptic number.

642069700751 is a deficient number, since it is larger than the sum of its proper divisors (815924449).

642069700751 is a wasteful number, since it uses less digits than its factorization.

642069700751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258889.

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 642069700751 in words is "six hundred forty-two billion, sixty-nine million, seven hundred thousand, seven hundred fifty-one".