61294922169 has 64 divisors (see below), whose sum is σ = 94109734656. Its totient is φ = 35152625664.

The previous prime is 61294922149. The next prime is 61294922177. The reversal of 61294922169 is 96122949216.

It is not a de Polignac number, because 61294922169 - 2¹⁶ = 61294856633 is a prime.

It is a super-2 number, since 2×61294922169² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (61294922119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36118729 + ... + 36120425.

It is an arithmetic number, because the mean of its divisors is an integer number (1470464604).

Almost surely, 2^61294922169 is an apocalyptic number.

It is an amenable number.

61294922169 is a deficient number, since it is larger than the sum of its proper divisors (32814812487).

61294922169 is a wasteful number, since it uses less digits than its factorization.

61294922169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234.

The product of its digits is 839808, while the sum is 51.

The spelling of 61294922169 in words is "sixty-one billion, two hundred ninety-four million, nine hundred twenty-two thousand, one hundred sixty-nine".