61691378362 has 8 divisors (see below), whose sum is σ = 92570089536. Its totient is φ = 30834681852.

The previous prime is 61691378261. The next prime is 61691378381. The reversal of 61691378362 is 26387319616.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5496658 + ... + 5507869.

It is an arithmetic number, because the mean of its divisors is an integer number (11571261192).

Almost surely, 2^61691378362 is an apocalyptic number.

61691378362 is a deficient number, since it is larger than the sum of its proper divisors (30878711174).

61691378362 is a wasteful number, since it uses less digits than its factorization.

61691378362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11007332.

The product of its digits is 1959552, while the sum is 52.

The spelling of 61691378362 in words is "sixty-one billion, six hundred ninety-one million, three hundred seventy-eight thousand, three hundred sixty-two".