15123011401 has 2 divisors, whose sum is σ = 15123011402. Its totient is φ = 15123011400.

The previous prime is 15123011399. The next prime is 15123011461. The reversal of 15123011401 is 10411032151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9554867001 + 5568144400 = 97749^2 + 74620^2 .

It is a cyclic number.

It is not a de Polignac number, because 15123011401 - 2¹ = 15123011399 is a prime.

Together with 15123011399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15123011461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7561505700 + 7561505701.

It is an arithmetic number, because the mean of its divisors is an integer number (7561505701).

Almost surely, 2^15123011401 is an apocalyptic number.

It is an amenable number.

15123011401 is a deficient number, since it is larger than the sum of its proper divisors (1).

15123011401 is an equidigital number, since it uses as much as digits as its factorization.

15123011401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 15123011401 its reverse (10411032151), we get a palindrome (25534043552).

The spelling of 15123011401 in words is "fifteen billion, one hundred twenty-three million, eleven thousand, four hundred one".