61254166951 has 2 divisors, whose sum is σ = 61254166952. Its totient is φ = 61254166950.

The previous prime is 61254166891. The next prime is 61254166957. The reversal of 61254166951 is 15966145216.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61254166951 - 2¹⁹ = 61253642663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61254166957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30627083475 + 30627083476.

It is an arithmetic number, because the mean of its divisors is an integer number (30627083476).

Almost surely, 2^61254166951 is an apocalyptic number.

61254166951 is a deficient number, since it is larger than the sum of its proper divisors (1).

61254166951 is an equidigital number, since it uses as much as digits as its factorization.

61254166951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 46.

The spelling of 61254166951 in words is "sixty-one billion, two hundred fifty-four million, one hundred sixty-six thousand, nine hundred fifty-one".