611553101155 has 4 divisors (see below), whose sum is σ = 733863721392. Its totient is φ = 489242480920.

The previous prime is 611553101129. The next prime is 611553101197. The reversal of 611553101155 is 551101355116.

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

It is not a de Polignac number, because 611553101155 - 2²¹ = 611551004003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 611553101155.

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, 61155310111 + ... + 61155310120.

It is an arithmetic number, because the mean of its divisors is an integer number (183465930348).

Almost surely, 2^611553101155 is an apocalyptic number.

611553101155 is a deficient number, since it is larger than the sum of its proper divisors (122310620237).

611553101155 is a wasteful number, since it uses less digits than its factorization.

611553101155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122310620236.

The product of its (nonzero) digits is 11250, while the sum is 34.

The spelling of 611553101155 in words is "six hundred eleven billion, five hundred fifty-three million, one hundred one thousand, one hundred fifty-five".