87456238371553 has 2 divisors, whose sum is σ = 87456238371554. Its totient is φ = 87456238371552.

The previous prime is 87456238371521. The next prime is 87456238371571. The reversal of 87456238371553 is 35517383265478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68937434362449 + 18518804009104 = 8302857^2 + 4303348^2 .

It is a cyclic number.

It is not a de Polignac number, because 87456238371553 - 2⁵ = 87456238371521 is a prime.

It is not a weakly prime, because it can be changed into another prime (87456238371503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43728119185776 + 43728119185777.

It is an arithmetic number, because the mean of its divisors is an integer number (43728119185777).

Almost surely, 2^{87456238371553} is an apocalyptic number.

It is an amenable number.

87456238371553 is a deficient number, since it is larger than the sum of its proper divisors (1).

87456238371553 is an equidigital number, since it uses as much as digits as its factorization.

87456238371553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032000, while the sum is 67.

The spelling of 87456238371553 in words is "eighty-seven trillion, four hundred fifty-six billion, two hundred thirty-eight million, three hundred seventy-one thousand, five hundred fifty-three".