61601101015151 has 2 divisors, whose sum is σ = 61601101015152. Its totient is φ = 61601101015150.

The previous prime is 61601101015133. The next prime is 61601101015211. The reversal of 61601101015151 is 15151010110616.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61601101015151 - 2¹⁸ = 61601100753007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61601101015121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30800550507575 + 30800550507576.

It is an arithmetic number, because the mean of its divisors is an integer number (30800550507576).

Almost surely, 2^{61601101015151} is an apocalyptic number.

61601101015151 is a deficient number, since it is larger than the sum of its proper divisors (1).

61601101015151 is an equidigital number, since it uses as much as digits as its factorization.

61601101015151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 29.

Adding to 61601101015151 its reverse (15151010110616), we get a palindrome (76752111125767).

The spelling of 61601101015151 in words is "sixty-one trillion, six hundred one billion, one hundred one million, fifteen thousand, one hundred fifty-one".