402453116556646 has 16 divisors (see below), whose sum is σ = 605035085065488. Its totient is φ = 200775143520000.

The previous prime is 402453116556641. The next prime is 402453116556697. The reversal of 402453116556646 is 646655611354204.

It is a super-2 number, since 2×402453116556646² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402453116556641) 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, 95090755 + ... + 99232846.

It is an arithmetic number, because the mean of its divisors is an integer number (37814692816593).

Almost surely, 2^{402453116556646} is an apocalyptic number.

402453116556646 is a deficient number, since it is larger than the sum of its proper divisors (202581968508842).

402453116556646 is a wasteful number, since it uses less digits than its factorization.

402453116556646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194325927.

The product of its (nonzero) digits is 62208000, while the sum is 58.

The spelling of 402453116556646 in words is "four hundred two trillion, four hundred fifty-three billion, one hundred sixteen million, five hundred fifty-six thousand, six hundred forty-six".