401250778683 has 8 divisors (see below), whose sum is σ = 535021014528. Its totient is φ = 267490530984.

The previous prime is 401250778681. The next prime is 401250778727. The reversal of 401250778683 is 386877052104.

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

It is not a de Polignac number, because 401250778683 - 2¹ = 401250778681 is a prime.

It is a super-2 number, since 2×401250778683² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401250778681) 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, 2402791 + ... + 2564352.

It is an arithmetic number, because the mean of its divisors is an integer number (66877626816).

Almost surely, 2^401250778683 is an apocalyptic number.

401250778683 is a deficient number, since it is larger than the sum of its proper divisors (133770235845).

401250778683 is a wasteful number, since it uses less digits than its factorization.

401250778683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4994073.

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 401250778683 in words is "four hundred one billion, two hundred fifty million, seven hundred seventy-eight thousand, six hundred eighty-three".