61610554141421 has 8 divisors (see below), whose sum is σ = 65276018349120. Its totient is φ = 57949680374208.

The previous prime is 61610554141379. The next prime is 61610554141471. The reversal of 61610554141421 is 12414145501616.

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 61610554141421 - 2³⁴ = 61593374272237 is a prime.

It is a super-2 number, since 2×61610554141421² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61610554141471) 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, 1147582481 + ... + 1147636166.

It is an arithmetic number, because the mean of its divisors is an integer number (8159502293640).

Almost surely, 2^{61610554141421} is an apocalyptic number.

It is an amenable number.

61610554141421 is a deficient number, since it is larger than the sum of its proper divisors (3665464207699).

61610554141421 is a wasteful number, since it uses less digits than its factorization.

61610554141421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295220243.

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 61610554141421 in words is "sixty-one trillion, six hundred ten billion, five hundred fifty-four million, one hundred forty-one thousand, four hundred twenty-one".