61212733963 has 2 divisors, whose sum is σ = 61212733964. Its totient is φ = 61212733962.

The previous prime is 61212733931. The next prime is 61212733987. The reversal of 61212733963 is 36933721216.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61212733963 - 2⁵ = 61212733931 is a prime.

It is not a weakly prime, because it can be changed into another prime (61212733913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30606366981 + 30606366982.

It is an arithmetic number, because the mean of its divisors is an integer number (30606366982).

Almost surely, 2^61212733963 is an apocalyptic number.

61212733963 is a deficient number, since it is larger than the sum of its proper divisors (1).

61212733963 is an equidigital number, since it uses as much as digits as its factorization.

61212733963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 43.

The spelling of 61212733963 in words is "sixty-one billion, two hundred twelve million, seven hundred thirty-three thousand, nine hundred sixty-three".