61989933622 has 8 divisors (see below), whose sum is σ = 96191276400. Its totient is φ = 29926174824.

The previous prime is 61989933547. The next prime is 61989933623. The reversal of 61989933622 is 22633998916.

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

It is a Harshad number since it is a multiple of its sum of digits (58), and also a Moran number because the ratio is a prime number: 1068791959 = 61989933622 / (6 + 1 + 9 + 8 + 9 + 9 + 3 + 3 + 6 + 2 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61989933623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534395922 + ... + 534396037.

It is an arithmetic number, because the mean of its divisors is an integer number (12023909550).

Almost surely, 2^61989933622 is an apocalyptic number.

61989933622 is a deficient number, since it is larger than the sum of its proper divisors (34201342778).

61989933622 is a wasteful number, since it uses less digits than its factorization.

61989933622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068791990.

The product of its digits is 7558272, while the sum is 58.

The spelling of 61989933622 in words is "sixty-one billion, nine hundred eighty-nine million, nine hundred thirty-three thousand, six hundred twenty-two".