145659902749 has 32 divisors (see below), whose sum is σ = 159821568000. Its totient is φ = 132285757824.

The previous prime is 145659902737. The next prime is 145659902761. The reversal of 145659902749 is 947209956541.

It is an interprime number because it is at equal distance from previous prime (145659902737) and next prime (145659902761).

It is not a de Polignac number, because 145659902749 - 2⁷ = 145659902621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145659902779) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14905537 + ... + 14915305.

It is an arithmetic number, because the mean of its divisors is an integer number (4994424000).

Almost surely, 2^145659902749 is an apocalyptic number.

145659902749 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

145659902749 is a deficient number, since it is larger than the sum of its proper divisors (14161665251).

145659902749 is a wasteful number, since it uses less digits than its factorization.

145659902749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10177.

The product of its (nonzero) digits is 24494400, while the sum is 61.

The spelling of 145659902749 in words is "one hundred forty-five billion, six hundred fifty-nine million, nine hundred two thousand, seven hundred forty-nine".