157773325778 has 16 divisors (see below), whose sum is σ = 240127913664. Its totient is φ = 77731935120.

The previous prime is 157773325771. The next prime is 157773325783. The reversal of 157773325778 is 877523377751.

It is a self number, because there is not a number n which added to its sum of digits gives 157773325778.

It is not an unprimeable number, because it can be changed into a prime (157773325771) 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, 57125 + ... + 564632.

It is an arithmetic number, because the mean of its divisors is an integer number (15007994604).

Almost surely, 2^157773325778 is an apocalyptic number.

157773325778 is a deficient number, since it is larger than the sum of its proper divisors (82354587886).

157773325778 is a wasteful number, since it uses less digits than its factorization.

157773325778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623617.

The product of its digits is 60505200, while the sum is 62.

The spelling of 157773325778 in words is "one hundred fifty-seven billion, seven hundred seventy-three million, three hundred twenty-five thousand, seven hundred seventy-eight".