145401161515 has 4 divisors (see below), whose sum is σ = 174481393824. Its totient is φ = 116320929208.

The previous prime is 145401161501. The next prime is 145401161527. The reversal of 145401161515 is 515161104541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 515161104541 = 49123 ⋅10487167.

It is a cyclic number.

It is not a de Polignac number, because 145401161515 - 2⁷ = 145401161387 is a prime.

It is a super-2 number, since 2×145401161515² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14540116147 + ... + 14540116156.

It is an arithmetic number, because the mean of its divisors is an integer number (43620348456).

Almost surely, 2^145401161515 is an apocalyptic number.

145401161515 is a deficient number, since it is larger than the sum of its proper divisors (29080232309).

145401161515 is an equidigital number, since it uses as much as digits as its factorization.

145401161515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29080232308.

The product of its (nonzero) digits is 12000, while the sum is 34.

It can be divided in two parts, 145401 and 161515, that added together give a square (306916 = 554²).

The spelling of 145401161515 in words is "one hundred forty-five billion, four hundred one million, one hundred sixty-one thousand, five hundred fifteen".