402257418079 has 8 divisors (see below), whose sum is σ = 453958215120. Its totient is φ = 353078611200.

The previous prime is 402257418049. The next prime is 402257418131. The reversal of 402257418079 is 970814752204.

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 402257418079 - 2⁵ = 402257418047 is a prime.

It is a super-2 number, since 2×402257418079² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402257418019) 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, 630497202 + ... + 630497839.

It is an arithmetic number, because the mean of its divisors is an integer number (56744776890).

Almost surely, 2^402257418079 is an apocalyptic number.

402257418079 is a deficient number, since it is larger than the sum of its proper divisors (51700797041).

402257418079 is a wasteful number, since it uses less digits than its factorization.

402257418079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260995081.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 402257418079 in words is "four hundred two billion, two hundred fifty-seven million, four hundred eighteen thousand, seventy-nine".