61377423432527 has 2 divisors, whose sum is σ = 61377423432528. Its totient is φ = 61377423432526.

The previous prime is 61377423432509. The next prime is 61377423432553. The reversal of 61377423432527 is 72523432477316.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61377423432527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61377423432587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30688711716263 + 30688711716264.

It is an arithmetic number, because the mean of its divisors is an integer number (30688711716264).

Almost surely, 2^{61377423432527} is an apocalyptic number.

61377423432527 is a deficient number, since it is larger than the sum of its proper divisors (1).

61377423432527 is an equidigital number, since it uses as much as digits as its factorization.

61377423432527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35562240, while the sum is 56.

The spelling of 61377423432527 in words is "sixty-one trillion, three hundred seventy-seven billion, four hundred twenty-three million, four hundred thirty-two thousand, five hundred twenty-seven".