40123615454 has 16 divisors (see below), whose sum is σ = 64858662960. Its totient is φ = 18506136960.

The previous prime is 40123615451. The next prime is 40123615489. The reversal of 40123615454 is 45451632104.

It is a super-2 number, since 2×40123615454² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40123615451) 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, 479492 + ... + 556919.

It is an arithmetic number, because the mean of its divisors is an integer number (4053666435).

Almost surely, 2^40123615454 is an apocalyptic number.

40123615454 is a deficient number, since it is larger than the sum of its proper divisors (24735047506).

40123615454 is a wasteful number, since it uses less digits than its factorization.

40123615454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037915.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 40123615454 in words is "forty billion, one hundred twenty-three million, six hundred fifteen thousand, four hundred fifty-four".