61999049834 has 32 divisors (see below), whose sum is σ = 99930101760. Its totient is φ = 28762398000.

The previous prime is 61999049807. The next prime is 61999049837. The reversal of 61999049834 is 43894099916.

It is not an unprimeable number, because it can be changed into a prime (61999049837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331307 + ... + 483489.

It is an arithmetic number, because the mean of its divisors is an integer number (3122815680).

Almost surely, 2^61999049834 is an apocalyptic number.

61999049834 is a deficient number, since it is larger than the sum of its proper divisors (37931051926).

61999049834 is a wasteful number, since it uses less digits than its factorization.

61999049834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152426.

The product of its (nonzero) digits is 15116544, while the sum is 62.

The spelling of 61999049834 in words is "sixty-one billion, nine hundred ninety-nine million, forty-nine thousand, eight hundred thirty-four".