72417406154 has 4 divisors (see below), whose sum is σ = 108626109234. Its totient is φ = 36208703076.

The previous prime is 72417406147. The next prime is 72417406163. The reversal of 72417406154 is 45160471427.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 46819006129 + 25598400025 = 216377^2 + 159995^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18104351537 + ... + 18104351540.

Almost surely, 2^72417406154 is an apocalyptic number.

72417406154 is a deficient number, since it is larger than the sum of its proper divisors (36208703080).

72417406154 is a wasteful number, since it uses less digits than its factorization.

72417406154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36208703079.

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 72417406154 in words is "seventy-two billion, four hundred seventeen million, four hundred six thousand, one hundred fifty-four".