61672777946 has 16 divisors (see below), whose sum is σ = 99656650464. Its totient is φ = 28455389424.

The previous prime is 61672777927. The next prime is 61672777951. The reversal of 61672777946 is 64977727616.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289280 + ... + 455003.

It is an arithmetic number, because the mean of its divisors is an integer number (6228540654).

Almost surely, 2^61672777946 is an apocalyptic number.

61672777946 is a deficient number, since it is larger than the sum of its proper divisors (37983872518).

61672777946 is a wasteful number, since it uses less digits than its factorization.

61672777946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747485.

The product of its digits is 37340352, while the sum is 62.

The spelling of 61672777946 in words is "sixty-one billion, six hundred seventy-two million, seven hundred seventy-seven thousand, nine hundred forty-six".