78133265740 has 24 divisors (see below), whose sum is σ = 164125955952. Its totient is φ = 31244525760.

The previous prime is 78133265729. The next prime is 78133265773. The reversal of 78133265740 is 4756233187.

It is a happy number.

It is a super-2 number, since 2×78133265740² (a number of 23 digits) contains 22 as substring.

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, 475579 + ... + 618418.

It is an arithmetic number, because the mean of its divisors is an integer number (6838581498).

Almost surely, 2^78133265740 is an apocalyptic number.

It is an amenable number.

78133265740 is an abundant number, since it is smaller than the sum of its proper divisors (85992690212).

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

78133265740 is a wasteful number, since it uses less digits than its factorization.

78133265740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097577 (or 1097575 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 78133265740 in words is "seventy-eight billion, one hundred thirty-three million, two hundred sixty-five thousand, seven hundred forty".