648429699390 has 64 divisors (see below), whose sum is σ = 1729739100672. Its totient is φ = 154229129600.

The previous prime is 648429699389. The next prime is 648429699419. The reversal of 648429699390 is 93996924846.

648429699390 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×648429699390² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18519666 + ... + 18554645.

It is an arithmetic number, because the mean of its divisors is an integer number (27027173448).

Almost surely, 2^648429699390 is an apocalyptic number.

648429699390 is an abundant number, since it is smaller than the sum of its proper divisors (1081309401282).

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

648429699390 is a wasteful number, since it uses less digits than its factorization.

648429699390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37074385.

The product of its (nonzero) digits is 181398528, while the sum is 69.

The spelling of 648429699390 in words is "six hundred forty-eight billion, four hundred twenty-nine million, six hundred ninety-nine thousand, three hundred ninety".