120415145551 has 2 divisors, whose sum is σ = 120415145552. Its totient is φ = 120415145550.

The previous prime is 120415145533. The next prime is 120415145567. The reversal of 120415145551 is 155541514021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120415145551 - 2³¹ = 118267661903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120415145581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60207572775 + 60207572776.

It is an arithmetic number, because the mean of its divisors is an integer number (60207572776).

Almost surely, 2^120415145551 is an apocalyptic number.

120415145551 is a deficient number, since it is larger than the sum of its proper divisors (1).

120415145551 is an equidigital number, since it uses as much as digits as its factorization.

120415145551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20000, while the sum is 34.

Adding to 120415145551 its reverse (155541514021), we get a palindrome (275956659572).

The spelling of 120415145551 in words is "one hundred twenty billion, four hundred fifteen million, one hundred forty-five thousand, five hundred fifty-one".