401615712842818 has 64 divisors (see below), whose sum is σ = 614600466923520. Its totient is φ = 196792967966400.

The previous prime is 401615712842807. The next prime is 401615712842857. The reversal of 401615712842818 is 818248217516104.

It is a super-2 number, since 2×401615712842818² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31324828848 + ... + 31324841668.

It is an arithmetic number, because the mean of its divisors is an integer number (9603132295680).

Almost surely, 2^{401615712842818} is an apocalyptic number.

401615712842818 is a deficient number, since it is larger than the sum of its proper divisors (212984754080702).

401615712842818 is a wasteful number, since it uses less digits than its factorization.

401615712842818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15863.

The product of its (nonzero) digits is 6881280, while the sum is 58.

The spelling of 401615712842818 in words is "four hundred one trillion, six hundred fifteen billion, seven hundred twelve million, eight hundred forty-two thousand, eight hundred eighteen".