61672151951 has 2 divisors, whose sum is σ = 61672151952. Its totient is φ = 61672151950.

The previous prime is 61672151939. The next prime is 61672151993. The reversal of 61672151951 is 15915127616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61672151951 - 2⁶ = 61672151887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61672151911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30836075975 + 30836075976.

It is an arithmetic number, because the mean of its divisors is an integer number (30836075976).

Almost surely, 2^61672151951 is an apocalyptic number.

61672151951 is a deficient number, since it is larger than the sum of its proper divisors (1).

61672151951 is an equidigital number, since it uses as much as digits as its factorization.

61672151951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 44.

The spelling of 61672151951 in words is "sixty-one billion, six hundred seventy-two million, one hundred fifty-one thousand, nine hundred fifty-one".