40123272057261 has 4 divisors (see below), whose sum is σ = 53497696076352. Its totient is φ = 26748848038172.

The previous prime is 40123272057257. The next prime is 40123272057263. The reversal of 40123272057261 is 16275027232104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40123272057261 - 2² = 40123272057257 is a prime.

It is a super-3 number, since 3×40123272057261³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40123272057263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6687212009541 + ... + 6687212009546.

It is an arithmetic number, because the mean of its divisors is an integer number (13374424019088).

Almost surely, 2^{40123272057261} is an apocalyptic number.

It is an amenable number.

40123272057261 is a deficient number, since it is larger than the sum of its proper divisors (13374424019091).

40123272057261 is a wasteful number, since it uses less digits than its factorization.

40123272057261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13374424019090.

The product of its (nonzero) digits is 282240, while the sum is 42.

Adding to 40123272057261 its reverse (16275027232104), we get a palindrome (56398299289365).

The spelling of 40123272057261 in words is "forty trillion, one hundred twenty-three billion, two hundred seventy-two million, fifty-seven thousand, two hundred sixty-one".