245722040388 has 72 divisors (see below), whose sum is σ = 680432538240. Its totient is φ = 74149642560.

The previous prime is 245722040383. The next prime is 245722040419. The reversal of 245722040388 is 883040227542.

245722040388 is a `hidden beast` number, since 2 + 4 + 5 + 7 + 220 + 40 + 388 = 666.

It is a super-2 number, since 2×245722040388² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (245722040383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1203495 + ... + 1392782.

It is an arithmetic number, because the mean of its divisors is an integer number (9450451920).

Almost surely, 2^245722040388 is an apocalyptic number.

It is an amenable number.

245722040388 is an abundant number, since it is smaller than the sum of its proper divisors (434710497852).

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

245722040388 is a wasteful number, since it uses less digits than its factorization.

245722040388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596537 (or 2596532 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 45.

The spelling of 245722040388 in words is "two hundred forty-five billion, seven hundred twenty-two million, forty thousand, three hundred eighty-eight".