40123272057251 has 16 divisors (see below), whose sum is σ = 41735668896768. Its totient is φ = 38530783792800.

The previous prime is 40123272057229. The next prime is 40123272057257. The reversal of 40123272057251 is 15275027232104.

It is a cyclic number.

It is not a de Polignac number, because 40123272057251 - 2¹⁰ = 40123272056227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40123272057199 and 40123272057208.

It is not an unprimeable number, because it can be changed into a prime (40123272057257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92036276 + ... + 92471198.

It is an arithmetic number, because the mean of its divisors is an integer number (2608479306048).

Almost surely, 2^{40123272057251} is an apocalyptic number.

40123272057251 is a deficient number, since it is larger than the sum of its proper divisors (1612396839517).

40123272057251 is a wasteful number, since it uses less digits than its factorization.

40123272057251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457802.

The product of its (nonzero) digits is 235200, while the sum is 41.

Adding to 40123272057251 its reverse (15275027232104), we get a palindrome (55398299289355).

The spelling of 40123272057251 in words is "forty trillion, one hundred twenty-three billion, two hundred seventy-two million, fifty-seven thousand, two hundred fifty-one".