401847965640 has 192 divisors, whose sum is σ = 1486678976640. Its totient is φ = 93182115840.

The previous prime is 401847965593. The next prime is 401847965647. The reversal of 401847965640 is 46569748104.

401847965640 is a `hidden beast` number, since 4 + 0 + 1 + 8 + 4 + 79 + 6 + 564 + 0 = 666.

It is a super-2 number, since 2×401847965640² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401847965647) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2114937 + ... + 2297096.

It is an arithmetic number, because the mean of its divisors is an integer number (7743119670).

Almost surely, 2^401847965640 is an apocalyptic number.

401847965640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401847965640 is an abundant number, since it is smaller than the sum of its proper divisors (1084831011000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401847965640 is a wasteful number, since it uses less digits than its factorization.

401847965640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4412084 (or 4412077 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 401847965640 in words is "four hundred one billion, eight hundred forty-seven million, nine hundred sixty-five thousand, six hundred forty".