61541151556615 has 16 divisors (see below), whose sum is σ = 77276354725728. Its totient is φ = 46998484730496.

The previous prime is 61541151556567. The next prime is 61541151556663. The reversal of 61541151556615 is 51665515114516.

It is an interprime number because it is at equal distance from previous prime (61541151556567) and next prime (61541151556663).

It is a cyclic number.

It is not a de Polignac number, because 61541151556615 - 2¹⁷ = 61541151425543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3138243717 + ... + 3138263326.

It is an arithmetic number, because the mean of its divisors is an integer number (4829772170358).

Almost surely, 2^{61541151556615} is an apocalyptic number.

61541151556615 is a deficient number, since it is larger than the sum of its proper divisors (15735203169113).

61541151556615 is a wasteful number, since it uses less digits than its factorization.

61541151556615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6276507138.

The product of its digits is 2700000, while the sum is 52.

The spelling of 61541151556615 in words is "sixty-one trillion, five hundred forty-one billion, one hundred fifty-one million, five hundred fifty-six thousand, six hundred fifteen".