120130503551 has 4 divisors (see below), whose sum is σ = 120895666152. Its totient is φ = 119365340952.

The previous prime is 120130503547. The next prime is 120130503557. The reversal of 120130503551 is 155305031021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120130503551 - 2² = 120130503547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120130503551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120130503557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382581065 + ... + 382581378.

It is an arithmetic number, because the mean of its divisors is an integer number (30223916538).

Almost surely, 2^120130503551 is an apocalyptic number.

120130503551 is a deficient number, since it is larger than the sum of its proper divisors (765162601).

120130503551 is an equidigital number, since it uses as much as digits as its factorization.

120130503551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765162600.

The product of its (nonzero) digits is 2250, while the sum is 26.

Adding to 120130503551 its reverse (155305031021), we get a palindrome (275435534572).

The spelling of 120130503551 in words is "one hundred twenty billion, one hundred thirty million, five hundred three thousand, five hundred fifty-one".