78749100357 has 8 divisors (see below), whose sum is σ = 111175200576. Its totient is φ = 49411200192.

The previous prime is 78749100343. The next prime is 78749100377. The reversal of 78749100357 is 75300194787.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78749100357 - 2⁴ = 78749100341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 1544100007 = 78749100357 / (7 + 8 + 7 + 4 + 9 + 1 + 0 + 0 + 3 + 5 + 7).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78749100307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 772049953 + ... + 772050054.

It is an arithmetic number, because the mean of its divisors is an integer number (13896900072).

Almost surely, 2^78749100357 is an apocalyptic number.

It is an amenable number.

78749100357 is a deficient number, since it is larger than the sum of its proper divisors (32426100219).

78749100357 is a wasteful number, since it uses less digits than its factorization.

78749100357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544100027.

The product of its (nonzero) digits is 1481760, while the sum is 51.

The spelling of 78749100357 in words is "seventy-eight billion, seven hundred forty-nine million, one hundred thousand, three hundred fifty-seven".