402718222887 has 4 divisors (see below), whose sum is σ = 536957630520. Its totient is φ = 268478815256.

The previous prime is 402718222853. The next prime is 402718222901. The reversal of 402718222887 is 788222817204.

402718222887 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402718222887 - 2⁸ = 402718222631 is a prime.

It is a super-2 number, since 2×402718222887² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402718222847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67119703812 + ... + 67119703817.

It is an arithmetic number, because the mean of its divisors is an integer number (134239407630).

Almost surely, 2^402718222887 is an apocalyptic number.

402718222887 is a deficient number, since it is larger than the sum of its proper divisors (134239407633).

402718222887 is a wasteful number, since it uses less digits than its factorization.

402718222887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134239407632.

The product of its (nonzero) digits is 1605632, while the sum is 51.

The spelling of 402718222887 in words is "four hundred two billion, seven hundred eighteen million, two hundred twenty-two thousand, eight hundred eighty-seven".