642211063748 has 12 divisors (see below), whose sum is σ = 1124039716800. Its totient is φ = 321056858952.

The previous prime is 642211063727. The next prime is 642211063759. The reversal of 642211063748 is 847360112246.

It is a happy number.

It is a super-3 number, since 3×642211063748³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 642211063699 and 642211063708.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12138536 + ... + 12191327.

It is an arithmetic number, because the mean of its divisors is an integer number (93669976400).

Almost surely, 2^642211063748 is an apocalyptic number.

It is an amenable number.

642211063748 is a deficient number, since it is larger than the sum of its proper divisors (481828653052).

642211063748 is a wasteful number, since it uses less digits than its factorization.

642211063748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24336466 (or 24336464 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 642211063748 in words is "six hundred forty-two billion, two hundred eleven million, sixty-three thousand, seven hundred forty-eight".