68490030392 has 16 divisors (see below), whose sum is σ = 146764350960. Its totient is φ = 29352870144.

The previous prime is 68490030391. The next prime is 68490030409. The reversal of 68490030392 is 29303009486.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68490030391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611518073 + ... + 611518184.

It is an arithmetic number, because the mean of its divisors is an integer number (9172771935).

Almost surely, 2^68490030392 is an apocalyptic number.

It is an amenable number.

68490030392 is an abundant number, since it is smaller than the sum of its proper divisors (78274320568).

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

68490030392 is a wasteful number, since it uses less digits than its factorization.

68490030392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223036270 (or 1223036266 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 44.

Adding to 68490030392 its sum of digits (44), we get a square (68490030436 = 261706²).

The spelling of 68490030392 in words is "sixty-eight billion, four hundred ninety million, thirty thousand, three hundred ninety-two".