61236052149187 has 4 divisors (see below), whose sum is σ = 61277399923896. Its totient is φ = 61194704374480.

The previous prime is 61236052149157. The next prime is 61236052149211. The reversal of 61236052149187 is 78194125063216.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61236052149187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61236052149127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20673885133 + ... + 20673888094.

It is an arithmetic number, because the mean of its divisors is an integer number (15319349980974).

It is a 1-persistent number, because it is pandigital, but 2⋅61236052149187 = 122472104298374 is not.

Almost surely, 2^{61236052149187} is an apocalyptic number.

61236052149187 is a deficient number, since it is larger than the sum of its proper divisors (41347774709).

61236052149187 is a wasteful number, since it uses less digits than its factorization.

61236052149187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41347774708.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 61236052149187 in words is "sixty-one trillion, two hundred thirty-six billion, fifty-two million, one hundred forty-nine thousand, one hundred eighty-seven".