147630121505257 has 4 divisors (see below), whose sum is σ = 147699989051860. Its totient is φ = 147560253958656.

The previous prime is 147630121505201. The next prime is 147630121505291. The reversal of 147630121505257 is 752505121036741.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10718218229161 + 136911903276096 = 3273869^2 + 11700936^2 .

It is a cyclic number.

It is not a de Polignac number, because 147630121505257 - 2¹⁵ = 147630121472489 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 147630121505257.

It is not an unprimeable number, because it can be changed into a prime (147630121505357) 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, 34933770132 + ... + 34933774357.

It is an arithmetic number, because the mean of its divisors is an integer number (36924997262965).

Almost surely, 2^{147630121505257} is an apocalyptic number.

It is an amenable number.

147630121505257 is a deficient number, since it is larger than the sum of its proper divisors (69867546603).

147630121505257 is an equidigital number, since it uses as much as digits as its factorization.

147630121505257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69867546602.

The product of its (nonzero) digits is 1764000, while the sum is 49.

The spelling of 147630121505257 in words is "one hundred forty-seven trillion, six hundred thirty billion, one hundred twenty-one million, five hundred five thousand, two hundred fifty-seven".