61877694002 has 4 divisors (see below), whose sum is σ = 92816541006. Its totient is φ = 30938847000.

The previous prime is 61877693981. The next prime is 61877694037. The reversal of 61877694002 is 20049677816.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 35744061721 + 26133632281 = 189061^2 + 161659^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15469423499 + ... + 15469423502.

Almost surely, 2^61877694002 is an apocalyptic number.

61877694002 is a deficient number, since it is larger than the sum of its proper divisors (30938847004).

61877694002 is a wasteful number, since it uses less digits than its factorization.

61877694002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30938847003.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 61877694002 in words is "sixty-one billion, eight hundred seventy-seven million, six hundred ninety-four thousand, two".