55615101515 has 4 divisors (see below), whose sum is σ = 66738121824. Its totient is φ = 44492081208.

The previous prime is 55615101499. The next prime is 55615101541. The reversal of 55615101515 is 51510151655.

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

It is a cyclic number.

It is not a de Polignac number, because 55615101515 - 2⁴ = 55615101499 is a prime.

It is a Duffinian number.

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, 5561510147 + ... + 5561510156.

It is an arithmetic number, because the mean of its divisors is an integer number (16684530456).

Almost surely, 2^55615101515 is an apocalyptic number.

55615101515 is a deficient number, since it is larger than the sum of its proper divisors (11123020309).

55615101515 is a wasteful number, since it uses less digits than its factorization.

55615101515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11123020308.

The product of its (nonzero) digits is 18750, while the sum is 35.

The spelling of 55615101515 in words is "fifty-five billion, six hundred fifteen million, one hundred one thousand, five hundred fifteen".