611172278380 has 24 divisors (see below), whose sum is σ = 1351012405680. Its totient is φ = 231602126400.

The previous prime is 611172278371. The next prime is 611172278383. The reversal of 611172278380 is 83872271116.

It is a self number, because there is not a number n which added to its sum of digits gives 611172278380.

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 7 ways as a sum of consecutive naturals, for example, 804173671 + ... + 804174430.

It is an arithmetic number, because the mean of its divisors is an integer number (56292183570).

Almost surely, 2^611172278380 is an apocalyptic number.

It is an amenable number.

611172278380 is an abundant number, since it is smaller than the sum of its proper divisors (739840127300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

611172278380 is a wasteful number, since it uses less digits than its factorization.

611172278380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608348129 (or 1608348127 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 46.

The spelling of 611172278380 in words is "six hundred eleven billion, one hundred seventy-two million, two hundred seventy-eight thousand, three hundred eighty".