148319964878421 has 32 divisors (see below), whose sum is σ = 227676977920000. Its totient is φ = 84129876832320.

The previous prime is 148319964878413. The next prime is 148319964878479. The reversal of 148319964878421 is 124878469913841.

It is not a de Polignac number, because 148319964878421 - 2³ = 148319964878413 is a prime.

It is a super-2 number, since 2×148319964878421² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148319964878021) 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, 12362136 + ... + 21200526.

It is an arithmetic number, because the mean of its divisors is an integer number (7114905560000).

Almost surely, 2^{148319964878421} is an apocalyptic number.

It is an amenable number.

148319964878421 is a deficient number, since it is larger than the sum of its proper divisors (79357013041579).

148319964878421 is a wasteful number, since it uses less digits than its factorization.

148319964878421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8844289.

The product of its digits is 668860416, while the sum is 75.

The spelling of 148319964878421 in words is "one hundred forty-eight trillion, three hundred nineteen billion, nine hundred sixty-four million, eight hundred seventy-eight thousand, four hundred twenty-one".