61055089421 has 16 divisors (see below), whose sum is σ = 65105476800. Its totient is φ = 57089743488.

The previous prime is 61055089411. The next prime is 61055089439. The reversal of 61055089421 is 12498055016.

It is a cyclic number.

It is not a de Polignac number, because 61055089421 - 2¹⁸ = 61054827277 is a prime.

It is a super-2 number, since 2×61055089421² (a number of 22 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 (61055089411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1667705 + ... + 1703921.

It is an arithmetic number, because the mean of its divisors is an integer number (4069092300).

Almost surely, 2^61055089421 is an apocalyptic number.

It is an amenable number.

61055089421 is a deficient number, since it is larger than the sum of its proper divisors (4050387379).

61055089421 is a wasteful number, since it uses less digits than its factorization.

61055089421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37388.

The product of its (nonzero) digits is 86400, while the sum is 41.

The spelling of 61055089421 in words is "sixty-one billion, fifty-five million, eighty-nine thousand, four hundred twenty-one".