240157554734638 has 16 divisors (see below), whose sum is σ = 360333772152480. Its totient is φ = 120046298334336.

The previous prime is 240157554734569. The next prime is 240157554734639. The reversal of 240157554734638 is 836437455751042.

It is a super-2 number, since 2×240157554734638² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 240157554734638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240157554734639) 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, 579579706 + ... + 579993922.

It is an arithmetic number, because the mean of its divisors is an integer number (22520860759530).

Almost surely, 2^{240157554734638} is an apocalyptic number.

240157554734638 is a deficient number, since it is larger than the sum of its proper divisors (120176217417842).

240157554734638 is a wasteful number, since it uses less digits than its factorization.

240157554734638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491931.

The product of its (nonzero) digits is 338688000, while the sum is 64.

The spelling of 240157554734638 in words is "two hundred forty trillion, one hundred fifty-seven billion, five hundred fifty-four million, seven hundred thirty-four thousand, six hundred thirty-eight".