68787506940 has 96 divisors (see below), whose sum is σ = 193598017536. Its totient is φ = 18248924160.

The previous prime is 68787506927. The next prime is 68787507037. The reversal of 68787506940 is 4960578786.

It is a super-2 number, since 2×68787506940² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 20574909 + ... + 20578251.

It is an arithmetic number, because the mean of its divisors is an integer number (2016646016).

Almost surely, 2^68787506940 is an apocalyptic number.

68787506940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68787506940 is an abundant number, since it is smaller than the sum of its proper divisors (124810510596).

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

68787506940 is a wasteful number, since it uses less digits than its factorization.

68787506940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5019 (or 5017 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 60.

The spelling of 68787506940 in words is "sixty-eight billion, seven hundred eighty-seven million, five hundred six thousand, nine hundred forty".