402081355667 has 8 divisors (see below), whose sum is σ = 434791354176. Its totient is φ = 370377818752.

The previous prime is 402081355639. The next prime is 402081355691. The reversal of 402081355667 is 766553180204.

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 402081355667 - 2²⁸ = 401812920211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402081355607) 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, 251614568 + ... + 251616165.

It is an arithmetic number, because the mean of its divisors is an integer number (54348919272).

Almost surely, 2^402081355667 is an apocalyptic number.

402081355667 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

402081355667 is a deficient number, since it is larger than the sum of its proper divisors (32709998509).

402081355667 is a wasteful number, since it uses less digits than its factorization.

402081355667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503230797.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 402081355667 in words is "four hundred two billion, eighty-one million, three hundred fifty-five thousand, six hundred sixty-seven".