611172278385 has 32 divisors (see below), whose sum is σ = 978968833920. Its totient is φ = 325594368000.

The previous prime is 611172278383. The next prime is 611172278393. The reversal of 611172278385 is 583872271116.

It is not a de Polignac number, because 611172278385 - 2¹ = 611172278383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (611172278383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68968855 + ... + 68977715.

It is an arithmetic number, because the mean of its divisors is an integer number (30592776060).

Almost surely, 2^611172278385 is an apocalyptic number.

It is an amenable number.

611172278385 is a deficient number, since it is larger than the sum of its proper divisors (367796555535).

611172278385 is a wasteful number, since it uses less digits than its factorization.

611172278385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13489.

The product of its digits is 1128960, while the sum is 51.

The spelling of 611172278385 in words is "six hundred eleven billion, one hundred seventy-two million, two hundred seventy-eight thousand, three hundred eighty-five".