646021263501462 has 16 divisors (see below), whose sum is σ = 1296955236234240. Its totient is φ = 214521636295272.

The previous prime is 646021263501347. The next prime is 646021263501473. The reversal of 646021263501462 is 264105362120646.

It is a super-2 number, since 2×646021263501462² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204696216262 + ... + 204696219417.

It is an arithmetic number, because the mean of its divisors is an integer number (81059702264640).

Almost surely, 2^{646021263501462} is an apocalyptic number.

646021263501462 is an abundant number, since it is smaller than the sum of its proper divisors (650933972732778).

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

646021263501462 is a wasteful number, since it uses less digits than its factorization.

646021263501462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409392435947.

The product of its (nonzero) digits is 2488320, while the sum is 48.

The spelling of 646021263501462 in words is "six hundred forty-six trillion, twenty-one billion, two hundred sixty-three million, five hundred one thousand, four hundred sixty-two".