145261949059 has 4 divisors (see below), whose sum is σ = 146894105880. Its totient is φ = 143629792240.

The previous prime is 145261949033. The next prime is 145261949069. The reversal of 145261949059 is 950949162541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 950949162541 = 7 ⋅135849880363.

It is a cyclic number.

It is not a de Polignac number, because 145261949059 - 2²⁵ = 145228394627 is a prime.

It is a super-2 number, since 2×145261949059² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145261949029) 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, 816078277 + ... + 816078454.

It is an arithmetic number, because the mean of its divisors is an integer number (36723526470).

Almost surely, 2^145261949059 is an apocalyptic number.

145261949059 is a deficient number, since it is larger than the sum of its proper divisors (1632156821).

145261949059 is an equidigital number, since it uses as much as digits as its factorization.

145261949059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632156820.

The product of its (nonzero) digits is 3499200, while the sum is 55.

The spelling of 145261949059 in words is "one hundred forty-five billion, two hundred sixty-one million, nine hundred forty-nine thousand, fifty-nine".