72417720146626 has 8 divisors (see below), whose sum is σ = 115016379056460. Its totient is φ = 34078927127808.

The previous prime is 72417720146593. The next prime is 72417720146647. The reversal of 72417720146626 is 62664102771427.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 70363660773025 + 2054059373601 = 8388305^2 + 1433199^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064966472711 + ... + 1064966472778.

Almost surely, 2^{72417720146626} is an apocalyptic number.

72417720146626 is a deficient number, since it is larger than the sum of its proper divisors (42598658909834).

72417720146626 is a wasteful number, since it uses less digits than its factorization.

72417720146626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129932945508.

The product of its (nonzero) digits is 9483264, while the sum is 55.

The spelling of 72417720146626 in words is "seventy-two trillion, four hundred seventeen billion, seven hundred twenty million, one hundred forty-six thousand, six hundred twenty-six".