15611670551 has 8 divisors (see below), whose sum is σ = 15767909664. Its totient is φ = 15455521440.

The previous prime is 15611670523. The next prime is 15611670559. The reversal of 15611670551 is 15507611651.

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

It is a cyclic number.

It is not a de Polignac number, because 15611670551 - 2¹⁴ = 15611654167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15611670559) 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, 358121 + ... + 399341.

It is an arithmetic number, because the mean of its divisors is an integer number (1970988708).

Almost surely, 2^15611670551 is an apocalyptic number.

15611670551 is a deficient number, since it is larger than the sum of its proper divisors (156239113).

15611670551 is a wasteful number, since it uses less digits than its factorization.

15611670551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45001.

The product of its (nonzero) digits is 31500, while the sum is 38.

The spelling of 15611670551 in words is "fifteen billion, six hundred eleven million, six hundred seventy thousand, five hundred fifty-one".