78404510745 has 96 divisors (see below), whose sum is σ = 151955616384. Its totient is φ = 37068595200.

The previous prime is 78404510671. The next prime is 78404510753. The reversal of 78404510745 is 54701540487.

It is not a de Polignac number, because 78404510745 - 2¹¹ = 78404508697 is a prime.

It is a super-2 number, since 2×78404510745² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 78404510745.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14407225 + ... + 14412665.

It is an arithmetic number, because the mean of its divisors is an integer number (1582871004).

Almost surely, 2^78404510745 is an apocalyptic number.

It is an amenable number.

78404510745 is a deficient number, since it is larger than the sum of its proper divisors (73551105639).

78404510745 is a wasteful number, since it uses less digits than its factorization.

78404510745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6183 (or 6180 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 45.

The spelling of 78404510745 in words is "seventy-eight billion, four hundred four million, five hundred ten thousand, seven hundred forty-five".