61201515007 has 2 divisors, whose sum is σ = 61201515008. Its totient is φ = 61201515006.

The previous prime is 61201514993. The next prime is 61201515013. The reversal of 61201515007 is 70051510216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61201515007 - 2²⁷ = 61067297279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61201515017) 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, 30600757503 + 30600757504.

It is an arithmetic number, because the mean of its divisors is an integer number (30600757504).

Almost surely, 2^61201515007 is an apocalyptic number.

61201515007 is a deficient number, since it is larger than the sum of its proper divisors (1).

61201515007 is an equidigital number, since it uses as much as digits as its factorization.

61201515007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 28.

The spelling of 61201515007 in words is "sixty-one billion, two hundred one million, five hundred fifteen thousand, seven".