61887103072641 has 24 divisors (see below), whose sum is σ = 111450367439424. Its totient is φ = 32149144452960.

The previous prime is 61887103072603. The next prime is 61887103072693. The reversal of 61887103072641 is 14627030178816.

61887103072641 is a `hidden beast` number, since 6 + 1 + 8 + 8 + 71 + 0 + 307 + 264 + 1 = 666.

It is not a de Polignac number, because 61887103072641 - 2⁶ = 61887103072577 is a prime.

It is a super-2 number, since 2×61887103072641² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61887103072241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44651588826 + ... + 44651590211.

It is an arithmetic number, because the mean of its divisors is an integer number (4643765309976).

Almost surely, 2^{61887103072641} is an apocalyptic number.

It is an amenable number.

61887103072641 is a deficient number, since it is larger than the sum of its proper divisors (49563264366783).

61887103072641 is a wasteful number, since it uses less digits than its factorization.

61887103072641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89303179061 (or 89303179058 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The spelling of 61887103072641 in words is "sixty-one trillion, eight hundred eighty-seven billion, one hundred three million, seventy-two thousand, six hundred forty-one".