61672532631578 has 8 divisors (see below), whose sum is σ = 100918689760800. Its totient is φ = 28032969377980.

The previous prime is 61672532631553. The next prime is 61672532631581. The reversal of 61672532631578 is 87513623527616.

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

It is a self number, because there is not a number n which added to its sum of digits gives 61672532631578.

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, 1401648468878 + ... + 1401648468921.

It is an arithmetic number, because the mean of its divisors is an integer number (12614836220100).

Almost surely, 2^{61672532631578} is an apocalyptic number.

61672532631578 is a deficient number, since it is larger than the sum of its proper divisors (39246157129222).

61672532631578 is a wasteful number, since it uses less digits than its factorization.

61672532631578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803296937812.

The product of its digits is 76204800, while the sum is 62.

The spelling of 61672532631578 in words is "sixty-one trillion, six hundred seventy-two billion, five hundred thirty-two million, six hundred thirty-one thousand, five hundred seventy-eight".