68787009402 has 16 divisors (see below), whose sum is σ = 139315463040. Its totient is φ = 22638762432.

The previous prime is 68787009329. The next prime is 68787009437. The reversal of 68787009402 is 20490078786.

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, 72559663 + ... + 72560610.

It is an arithmetic number, because the mean of its divisors is an integer number (8707216440).

Almost surely, 2^68787009402 is an apocalyptic number.

68787009402 is an abundant number, since it is smaller than the sum of its proper divisors (70528453638).

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

68787009402 is a wasteful number, since it uses less digits than its factorization.

68787009402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145120357.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 68787009402 in words is "sixty-eight billion, seven hundred eighty-seven million, nine thousand, four hundred two".