61423107021291 has 8 divisors (see below), whose sum is σ = 81898766270464. Its totient is φ = 40948092893160.

The previous prime is 61423107021257. The next prime is 61423107021401. The reversal of 61423107021291 is 19212070132416.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61423107021291 - 2¹¹ = 61423107019243 is a prime.

It is a super-2 number, since 2×61423107021291² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61423107021251) 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, 161058055 + ... + 161438976.

It is an arithmetic number, because the mean of its divisors is an integer number (10237345783808).

Almost surely, 2^{61423107021291} is an apocalyptic number.

61423107021291 is a deficient number, since it is larger than the sum of its proper divisors (20475659249173).

61423107021291 is a wasteful number, since it uses less digits than its factorization.

61423107021291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322560521.

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 61423107021291 in words is "sixty-one trillion, four hundred twenty-three billion, one hundred seven million, twenty-one thousand, two hundred ninety-one".